At a particular music store, CDs are on sale at $12.00 for the first one purchased and $9.00 for each additional disc purchased.
2 answers:
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Answer:
Undefined
Step-by-step explanation:
has a slope of
, since it is a horizontal line. The only types of lines that are perpendicular to horizontal lines are vertical lines, which are usually in the form
(where
is any real number). Vertical lines have an undefined slope, so the answer is undefined. Hope this helps!
